The myofibrils of skeletal muscle are made up of repeating units called

A) Z lines. B) motor units. C) T tubules. D) fibers. E) sarcomeres.


E

Biology & Microbiology

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Which of the following is not needed for DNA replication?

A. ribosomes B. DNA C. nucleotides D. enzymes E. None of these are needed.

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The last case of naturally contracted smallpox occurred in

A. 1900. B. 1950. C. 1965. D. 1977. E. 1989.

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What new technique or technology may revolutionize the way in which cell biologists alter the genomes of cells and organisms?

A) genome editing B) homologous recombination C) RNA-mediated interference D) recombinant DNA technology E) next-generation sequencing

Biology & Microbiology

Plants that are dicots have 

A. two seed leaves. B. two petals. C. twins. D. a two-year growing period.  

Biology & Microbiology